Abstract: The invention described in the application relates to a panel of gene expression markers for node-negative, ER-positive, HER2-negative breast cancer patients. The invention thus provides methods and compositions, e.g., kits and/or microarrays, for evaluating gene expression levels of the markers and methods of using such gene expression levels to evaluate the likelihood of relapse of a node-negative, ER-positive, HER2-negative breast cancer patient. Such information can be used in determining treatment options for patients.